:root {
  color-scheme: dark;
  --app-bg: #101214;
  --surface: #1b1f23;
  --surface-strong: #24282d;
  --surface-soft: #15181c;
  --line: rgba(255, 255, 255, 0.14);
  --line-strong: rgba(255, 255, 255, 0.28);
  --text-soft: #b9c1cc;
  --accent: #d17a19;
  --playhead: #f0c859;
  --beat-width: 30px;
  --row-height: 4.2rem;
  --track-label-width: 7.2rem;
  --ruler-height: 2rem;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--app-bg);
}

.app-nav {
  min-height: 4rem;
  border-bottom: 1px solid var(--line);
  background: #191c20;
}

.brand-mark {
  width: 2rem;
  height: 2rem;
  border-radius: 0.4rem;
}

.navbar-brand {
  min-width: 0;
  font-size: 1rem;
  font-weight: 700;
}

.app-nav .badge {
  max-width: 8.8rem;
  white-space: normal;
}

.nav-song-title {
  min-width: 0;
  max-width: 22rem;
  flex: 1 1 9rem;
}

.nav-song-title .form-control {
  min-width: 0;
  color: #fff;
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.06);
  font-weight: 700;
}

.nav-song-title .form-control:focus {
  border-color: var(--line-strong);
  box-shadow: 0 0 0 0.18rem rgba(209, 122, 25, 0.22);
}

.app-shell {
  min-height: calc(100vh - 4rem);
  display: flex;
  flex-direction: column;
}

.transport-band {
  display: grid;
  gap: 0.75rem;
  align-items: center;
  padding: 0.75rem;
  border-bottom: 1px solid var(--line);
  background: var(--surface-strong);
}

.transport-controls {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.5rem;
}

.transport-button {
  min-height: 2.75rem;
  font-weight: 700;
}

.song-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem;
}

.field {
  display: grid;
  gap: 0.25rem;
  min-width: 0;
  color: var(--text-soft);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0;
}

.field .form-control,
.field .form-select {
  min-height: 2.45rem;
}

.tempo-button,
.key-button {
  min-height: 2.45rem;
  font-weight: 800;
}

.transport-settings-button {
  width: 2.75rem;
  min-height: 2.75rem;
  padding-inline: 0;
  font-size: 1rem;
  line-height: 1;
}

.transport-tool-panel {
  display: grid;
  align-items: center;
  min-width: 0;
}

.workspace {
  flex: 1;
  display: grid;
  gap: 0.75rem;
  min-width: 0;
  padding: 0.75rem;
}

.timeline-wrap {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  overflow: hidden;
  background: var(--surface);
}

.timeline-wrap {
  background: var(--surface-soft);
}

.timeline-scroller {
  max-height: 62vh;
  overflow: auto;
}

.timeline {
  position: relative;
  width: max-content;
  min-width: 100%;
}

.bar-ruler {
  position: sticky;
  top: 0;
  z-index: 8;
  height: var(--ruler-height);
  margin-left: var(--track-label-width);
  border-bottom: 1px solid var(--line-strong);
  background: #24282d;
}

.bar-marker {
  position: absolute;
  top: 0;
  bottom: 0;
  padding: 0.35rem 0 0 0.35rem;
  border-left: 1px solid var(--line-strong);
  color: var(--text-soft);
  font-size: 0.78rem;
}

.bar-marker span {
  display: block;
  max-width: 3rem;
  overflow: hidden;
  text-overflow: ellipsis;
}

.loop-region {
  position: absolute;
  top: 0.2rem;
  bottom: 0.2rem;
  z-index: 2;
  border: 1px solid rgba(240, 200, 89, 0.9);
  border-radius: 0.25rem;
  background: rgba(240, 200, 89, 0.18);
  pointer-events: none;
}

.loop-region-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 0.65rem;
  pointer-events: auto;
  cursor: ew-resize;
}

.loop-region-handle.is-start {
  left: -0.35rem;
}

.loop-region-handle.is-end {
  right: -0.35rem;
}

.track-rows {
  display: grid;
  gap: 0.35rem;
}

.timeline-group {
  display: grid;
  background: var(--surface-soft);
}

.timeline-group + .timeline-group {
  border-top: 1px solid var(--line-strong);
}

.timeline-group-ruler {
  position: relative;
  top: auto;
}

.timeline-group-rows {
  display: grid;
}

.timeline-row {
  --clip-row-height: var(--row-height);
  --clip-inset: 0.62rem;
  display: grid;
  grid-template-columns: var(--track-label-width) 1fr;
  min-height: var(--clip-row-height);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.timeline-row.is-collapsed {
  --clip-row-height: 1.875rem;
  --clip-inset: 0.34rem;
}

.timeline-row.is-guitar-chord-row {
  --clip-row-height: 8.8rem;
  --clip-inset: 0.42rem;
}

.row-label {
  position: sticky;
  left: 0;
  z-index: 7;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 1.65rem;
  align-content: center;
  align-items: center;
  gap: 0.1rem 0.35rem;
  padding: 0.5rem 0.65rem;
  border-right: 1px solid var(--line);
  background: #1f2328;
}

.timeline-row.is-collapsed .row-label {
  padding-block: 0.2rem;
}

.row-label-text {
  display: grid;
  gap: 0.1rem;
  min-width: 0;
}

.row-label strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.86rem;
}

.row-label span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-soft);
  font-size: 0.74rem;
}

.timeline-row.is-collapsed .row-label-text > span {
  display: none;
}

.row-control-stack {
  display: grid;
  gap: 0.08rem;
  justify-items: center;
}

.row-settings-button,
.row-collapse-button,
.row-mute-button {
  width: 1.14rem;
  height: 1.14rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--text-soft);
  background: rgba(255, 255, 255, 0.04);
  font-size: 0.68rem;
  line-height: 1;
}

.row-collapse-button {
  position: relative;
}

.row-collapse-button::before {
  content: "";
  width: 0;
  height: 0;
  border-left: 0.24rem solid transparent;
  border-right: 0.24rem solid transparent;
  border-top: 0.32rem solid currentColor;
}

.row-collapse-button.is-collapsed::before {
  border-top: 0.24rem solid transparent;
  border-bottom: 0.24rem solid transparent;
  border-left: 0.32rem solid currentColor;
  border-right: 0;
}

.row-mute-button.is-muted {
  color: #ffcf8a;
  border-color: rgba(209, 122, 25, 0.7);
  background: rgba(209, 122, 25, 0.16);
}

.row-mute-button.is-pending {
  box-shadow: 0 0 0 2px rgba(240, 200, 89, 0.26);
}

.row-settings-button:hover,
.row-settings-button:focus-visible,
.row-collapse-button:hover,
.row-collapse-button:focus-visible,
.row-mute-button:hover,
.row-mute-button:focus-visible {
  color: #fff;
  border-color: var(--line-strong);
}

.row-grid {
  position: relative;
  min-height: var(--clip-row-height);
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(to right, rgba(255, 255, 255, 0.18) 1px, transparent 1px);
  background-size:
    calc(var(--beat-width) / 2) 100%,
    calc(var(--beat-width) * 4) 100%;
}

.row-grid.is-drums,
.row-grid.is-melody {
  background-image:
    repeating-linear-gradient(to bottom, rgba(77, 160, 107, 0.16) 0 0.8rem, rgba(83, 59, 113, 0.16) 0.8rem 1.6rem),
    linear-gradient(to right, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(to right, rgba(255, 255, 255, 0.18) 1px, transparent 1px);
  background-size:
    100% 100%,
    calc(var(--beat-width) / 2) 100%,
    calc(var(--beat-width) * 4) 100%;
}

.clip {
  position: absolute;
  top: var(--clip-inset);
  height: calc(var(--clip-row-height) - var(--clip-inset) - var(--clip-inset));
  min-width: 1.45rem;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  border: 1px solid color-mix(in srgb, var(--clip-color), white 28%);
  border-radius: 0.35rem;
  overflow: hidden;
  color: #fff;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--clip-color), white 9%), var(--clip-color));
  box-shadow: 0 0.4rem 0.75rem rgba(0, 0, 0, 0.28);
  cursor: grab;
  touch-action: none;
  user-select: none;
}

.timeline-row.is-collapsed .clip {
  min-width: 0.65rem;
  border-radius: 0.2rem;
  border-width: 0;
  box-shadow: none;
}

.clip:focus-visible,
.clip.is-selected {
  outline: 2px solid var(--playhead);
  outline-offset: 2px;
}

.clip.is-placeholder {
  opacity: 0.72;
  cursor: default;
}

.clip.is-preview {
  opacity: 0.52;
  border-style: dashed;
  border-color: color-mix(in srgb, var(--clip-color), white 72%);
  background:
    repeating-linear-gradient(
      -45deg,
      color-mix(in srgb, var(--clip-color), transparent 38%) 0 0.5rem,
      color-mix(in srgb, var(--clip-color), transparent 72%) 0.5rem 1rem
    );
  box-shadow: inset 0 0 0 1px color-mix(in srgb, white, transparent 78%);
}

.clip.is-preview::after {
  content: "PREVIEW";
  position: absolute;
  right: 0.35rem;
  bottom: 0.25rem;
  padding: 0.05rem 0.28rem;
  border-radius: 0.18rem;
  color: rgba(255, 255, 255, 0.92);
  background: rgba(0, 0, 0, 0.32);
  font-size: 0.58rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0;
  pointer-events: none;
}

.timeline-row.is-collapsed .clip.is-preview::after {
  display: none;
}

.clip-symbol {
  display: grid;
  gap: 0.08rem;
  justify-self: center;
  min-width: 0;
  padding-inline: 0.6rem;
  text-align: center;
  line-height: 1.05;
}

.clip-symbol strong,
.clip-symbol span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.clip-symbol strong {
  font-size: 1rem;
}

.clip-symbol span {
  font-size: 0.74rem;
}

.timeline-row.is-collapsed .clip-symbol {
  padding-inline: 0.16rem;
}

.timeline-row.is-collapsed .clip-symbol strong {
  font-size: 0;
}

.timeline-row.is-collapsed .clip-symbol span {
  display: none;
}

.timeline-row.is-collapsed .clip-symbol strong::before {
  content: "";
  display: block;
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 50%;
  background: currentColor;
}

.clip.is-guitar-chord {
  grid-template-columns: 1.55rem minmax(5.45rem, 1fr) auto;
  align-items: stretch;
  gap: 0.18rem;
  padding-inline: 0.42rem;
  border-color: color-mix(in srgb, var(--clip-color), white 56%);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--clip-color), white 18%), color-mix(in srgb, var(--clip-color), black 10%));
}

.clip-control-pair {
  align-self: center;
  display: grid;
  gap: 0.16rem;
  z-index: 3;
}

.clip-voicing-button,
.clip-playstyle-button {
  align-self: center;
  width: 1.32rem;
  height: 1.42rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.64);
  border-radius: 0.22rem;
  color: #fff;
  background: rgba(0, 0, 0, 0.42);
  font-size: 0.82rem;
  font-weight: 800;
  line-height: 1;
  cursor: pointer;
  touch-action: manipulation;
  z-index: 3;
}

.clip-voicing-button:disabled,
.clip-playstyle-button:disabled {
  opacity: 0.3;
  cursor: default;
}

.clip-guitar-chord {
  min-width: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 0.14rem;
  padding: 0.18rem 0.1rem 0.12rem;
}

.clip-guitar-title {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.25rem;
  min-width: 0;
  line-height: 1;
}

.clip-guitar-title strong,
.clip-guitar-title span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.clip-guitar-title strong {
  font-size: 0.9rem;
}

.clip-guitar-title span {
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.68rem;
}

.clip-guitar-playstyle {
  min-width: 0;
  display: grid;
  grid-template-columns: 1.32rem minmax(0, 1fr) 1.32rem;
  align-items: center;
  justify-items: center;
  gap: 0.18rem;
  color: #fff;
  font-size: 0.66rem;
  font-weight: 800;
  line-height: 1;
  text-align: center;
}

.clip-guitar-playstyle span {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.72);
}

.mini-guitar-board {
  --mini-cell: 0.9rem;
  justify-self: center;
  display: grid;
  grid-template-columns: 1.08rem repeat(6, var(--mini-cell));
  grid-template-rows: 1.2rem repeat(4, var(--mini-cell));
  gap: 1px;
  min-width: 0;
  padding: 0.12rem;
  border-radius: 0.18rem;
  background: rgba(0, 0, 0, 0.28);
}

.mini-guitar-spacer,
.mini-guitar-fret,
.mini-guitar-header,
.mini-guitar-cell {
  display: flex;
  align-items: center;
  justify-content: center;
}

.mini-guitar-header {
  flex-direction: column;
  gap: 1px;
  color: #fff;
  font-size: 0.48rem;
  font-weight: 800;
  line-height: 1;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.72);
}

.mini-guitar-header b {
  min-height: 0.48rem;
  color: #ffdfa3;
  font-size: 0.56rem;
  font-weight: 900;
}

.mini-guitar-fret {
  color: #fff;
  font-size: 0.56rem;
  font-weight: 900;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.72);
}

.mini-guitar-cell {
  border: 1px solid rgba(255, 255, 255, 0.62);
  background: rgba(0, 0, 0, 0.36);
}

.mini-guitar-cell b {
  width: 0.68rem;
  height: 0.68rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: #111;
  background: #f5c265;
  font-size: 0.52rem;
  font-weight: 900;
  line-height: 1;
}

.mini-guitar-cell b.is-root {
  background: #9be07f;
}

.timeline-row.is-collapsed .clip.is-guitar-chord {
  grid-template-columns: 1fr;
  padding-inline: 0.16rem;
}

.timeline-row.is-collapsed .clip.is-guitar-chord .clip-voicing-button,
.timeline-row.is-collapsed .clip.is-guitar-chord .clip-playstyle-button,
.timeline-row.is-collapsed .clip.is-guitar-chord .clip-control-pair,
.timeline-row.is-collapsed .clip.is-guitar-chord .clip-guitar-playstyle,
.timeline-row.is-collapsed .clip.is-guitar-chord .mini-guitar-board,
.timeline-row.is-collapsed .clip.is-guitar-chord .clip-guitar-title span {
  display: none;
}

.resize-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 0.75rem;
  cursor: ew-resize;
}

.resize-start {
  left: 0;
}

.resize-end {
  right: 0;
}

.playhead {
  position: absolute;
  left: var(--track-label-width);
  z-index: 9;
  width: 2px;
  background: var(--playhead);
  pointer-events: none;
}

.playhead::before {
  content: "";
  position: absolute;
  top: -0.45rem;
  left: -0.34rem;
  width: 0.72rem;
  height: 0.72rem;
  border-radius: 50%;
  background: var(--playhead);
}

.chord-palette {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(3.1rem, 3.4rem));
  justify-content: start;
  gap: 0.35rem;
  padding: 0;
}

.chord-palette.is-empty {
  display: block;
  min-height: 3rem;
  padding: 0;
}

.chord-button {
  width: min(3.4rem, 100%);
  aspect-ratio: 1;
  min-width: 0;
  min-height: 0;
  padding: 0.3rem;
  border: 1px solid color-mix(in srgb, var(--chord-color), white 22%);
  border-radius: 0.4rem;
  color: #fff;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--chord-color), white 8%), var(--chord-color));
}

.new-chord-settings-button {
  width: min(3.4rem, 100%);
  aspect-ratio: 1;
  min-width: 0;
  min-height: 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
  font-size: 1rem;
}

.new-chord-settings-button:hover,
.new-chord-settings-button:focus-visible {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.1);
}

.chord-palette-playstyle-select {
  grid-column: span 3;
  align-self: stretch;
  min-width: 10rem;
  min-height: 3.4rem;
  border-radius: 0.4rem;
}

.stock-clip-button {
  width: min(5.4rem, 100%);
  min-height: 3.4rem;
  padding: 0.45rem;
  border: 1px solid color-mix(in srgb, var(--clip-color), white 22%);
  border-radius: 0.4rem;
  color: #fff;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--clip-color), white 8%), var(--clip-color));
}

.stock-clip-button:disabled {
  opacity: 0.42;
}

.stock-clip-button strong,
.stock-clip-button span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.stock-clip-button strong {
  font-size: 0.88rem;
}

.stock-clip-button span {
  font-size: 0.62rem;
}

.clip-settings-button {
  width: 1.45rem;
  height: 1.45rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  justify-self: end;
  margin-right: 0.32rem;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 50%;
  color: #fff;
  background: rgba(0, 0, 0, 0.18);
  font-size: 0.78rem;
  line-height: 1;
  cursor: pointer;
}

.clip-settings-button:hover,
.clip-settings-button:focus-visible {
  border-color: #fff;
  background: rgba(0, 0, 0, 0.3);
}

.clip-transform-controls {
  display: grid;
  gap: 0.9rem;
}

.clip-transform-row {
  display: grid;
  grid-template-columns: minmax(4rem, 1fr) auto 3rem;
  gap: 0.75rem;
  align-items: center;
}

.clip-transform-row output {
  justify-self: end;
  min-width: 2.5rem;
  padding: 0.25rem 0.45rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 0.35rem;
  color: var(--text-strong);
  text-align: center;
  background: rgba(255, 255, 255, 0.05);
}

.chord-button strong,
.chord-button span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chord-button strong {
  font-size: 0.92rem;
}

.chord-button span {
  font-size: 0.62rem;
}

.tempo-display,
.key-display {
  margin-bottom: 0.85rem;
  text-align: center;
  font-size: 2.2rem;
  font-weight: 900;
  line-height: 1;
}

.tempo-step-grid,
.tempo-preset-grid,
.key-grid,
.quality-grid {
  display: grid;
  gap: 0.5rem;
}

.tempo-step-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 0.75rem;
}

.tempo-preset-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 0.75rem;
}

.key-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 0.75rem;
}

.quality-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.transport-modal-fields {
  display: grid;
  gap: 0.75rem;
}

#trackSoundModal .modal-body {
  display: grid;
  gap: 0.75rem;
}

.tap-tempo-button {
  width: 100%;
  min-height: 3rem;
  font-weight: 800;
}

@media (max-width: 420px) {
  :root {
    --beat-width: 30px;
    --track-label-width: 6.4rem;
  }

  .app-nav .badge {
    display: none;
  }

  .chord-palette {
    grid-template-columns: repeat(auto-fit, minmax(3rem, 1fr));
  }

  .chord-button {
    width: 100%;
  }
}

@media (min-width: 720px) {
  :root {
    --beat-width: 72px;
    --track-label-width: 8.5rem;
  }

  .transport-band {
    grid-template-columns: auto minmax(11rem, 20rem) minmax(16rem, 1fr);
  }

  .transport-controls {
    grid-template-columns: repeat(4, 3.2rem);
  }

  .transport-button {
    width: 3.2rem;
    padding-inline: 0;
  }

  .song-fields {
    grid-template-columns: repeat(2, minmax(5.5rem, 1fr));
  }

  .workspace {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (min-width: 1120px) {
  :root {
    --beat-width: 80px;
  }

  .workspace {
    grid-template-columns: minmax(0, 1fr);
    min-height: 0;
  }

  .timeline-scroller {
    max-height: calc(100vh - 9.5rem);
  }

}